II.—Black Sand.—Heat very fine quartz sand, previously freed from dust by sifting, and add to every 1/4 pound of it 6 to 8 spoonfuls of fat. Continue the heating as long as smoke or a flame is observed on stirring. The sand is finally washed and dried. This black sand will not rub off.
III.—Dark-Brown Sand.—Boil white sand in a decoction of brazil wood and dry it over a fire.
IV.—Rose-colored sand is obtained by mixing 100 parts of white sand with 4 parts of vermilion. {629}
Lawn Sand.
SAND HOLES IN BRASS: See Castings.
SAND SOAP: See Soap.
SANDSTONE CEMENTS: See Adhesives.
SANDSTONE COATING: See Acid-Proofing.
SANDSTONES, TO REMOVE OIL SPOTS FROM: See Cleaning Preparations and Methods.
SAND, TO PREVENT ADHESION OF SAND TO CASTINGS: See Castings.